Loom inspection device



J. H. MOORE LOOM INSPECTION DEVICE April 14, 1942.

Filed Nov. 19, 1940 2 Sheets-Sheet 2 Patented Apr. 14, 1942 I UNITED ST LOOM INSPECTION DEVICE 7 James H. Moore, Lawrence, Mass.

Application November 19, 1940,Serial No. 366,275

( Cl. l391) 4 Claims.

This invention relates to looms for weaving cloth. In such looms a great many threads constituting the .warp are wound on a warp beam from which they pass through a plurality of harnesses and a reed thence over a breast beam to a cloth roll in a well known manner. There is a lay carrying a reed and a shuttle race and a picker to cause the shuttle to travel back and forth between the warp threads when they are separated by the harnesses.

Although in most looms, there is a drop wire through which each warp thread passes so arranged that when and if it drops, when a thread breaks or becomes too slack, it either closes an electric circuit or energizes mechanical means to stop the loom so that the thread can be properly repaired. It sometimes happens that in preparing a warp one or more threads are not passed through drop wires and if one of these breaks,

that broken warp thread goes through the cloth causing a, flaw.

It sometimes happens that warp threads become crossed causing a defect and it often happens that there are slubs or other imperfections in a warp which cause imperfections in the cloth.

Besides this, the filling threads sometimes break or carry slubs into the cloth and in fact there are many things which happen which cause defective cloth. Such defects, if they are not detected,

make the cloth less valuable and in many cases the defects must be removed at a great expense.

Other defects are mispicks, broken picks, slubs, knot kinks, filling kinks, filling slips, floats and knot floats, thread out and double thread, harness skips and other defects caused by wrong draws through reed or harness, cross reeds, broken heddles and many others.

Part of the weavers duty is to watch for and detect such defects so that either they do not go into the cloth or only a short distance. With fine goods especially, this is very difiioult.

The purpose of this device is to provide a microscope or magnifying glass which can be readily attached to a loom in a position where it is normally focussed on the cloth and so that it can be slid back and forth from side to side over the breast beam or between the breast beam and the harnesses. It can be adjusted in such a position that the weaver can focus it on the cloth and can not only run it horizontally over the cloth but'can tip it up at an angle and focus it not only on the fiat sheet of cloth but on the warp threads forming the shed, so as to detect any break or slub before it goes into the cloth.

My purpose is accomplished by fastening suitable brackets or supports on the frame at each side over the breast beam and extending between them a plurality of elastic cords which support a frame carrying a magnifying glass and a light or lights with a reflector or reflectors to illuminate the exact part of the cloth or warp which is in the focus of the glass.

With such elastic cords, while the glass is always normally in focus on the cloth, it can be swung up and back and focussed on the warp threads up to the point where they come through the reed.

Preferably the glass should be carried by means such as these cords, or by rods which are parallel with the fell of the cloth where the filling is beaten up by the reed, and fairly close to the fell between the breast beam and the harnesses but in such a position that neither the reed nor the reed cap will strike it as the reed beats up.

Preferably, also it should be in such a position that it can be adjusted up and down for the right focus without being struck by the reed cap.

While a lazy tongs construction or telescopic supporting rod, in either case attached to the loom frame near the breast beam might be used, it is diificult to keep such a construction steady and at a uniform height focussed on the cloth.

A pivoted arm might be used but if it swings, the glass on an arc, it does not reach all of the parts which should be inspected.

Because they normally hold the glass in the right focus but allow it to be moved to right and left and also from front to back, I prefer to use elastic or flexible cords to hold the glass and its frame in focus but not too rigidly.

In the drawings, Fig. 1, is an isometric view of part of a 100m with my device in place.

Fig. 2 is a diagrammatic side elevation of the parts of a loom affected.

Fig. 3 is a plan view of my preferred type of tracks and glass frame.

Fig. 4 is a sectional view on line 4-4 of Fig. 3.

Fig. 5 is a sectional view on line 55 of Fig. 2 of a track supporting frame.

Fig. 6 is an isometric view of a modification of my tracks and supports.

Figs. 7 and 8 are plan views and Fig. 9 a sectional view each of a different modification of my magnifying glass and its supports.

In the drawings Fig. 1 represents a standard loom for weaving with a frame which includes a breast beam B which extends between the two side frame members D, D.

W represents the warp which passes through two or more harnesses H, H and a reed R which 2 beats up the filling to make the cloth C at the fell 90.

S represents the shed or space formed between the sets of warp threads through which the shuttle moves and Trepresents the cloth roll upon which the cloth C is rolled.

' In Fig. 1, A, A, represent cable supports for cables E, E, and are shown as including a bracket shaped stand I attached to a member D as by cap screws 2, 2. In its upright member 9 there is a hole 3 so that a vertically adjustable member 4 with a slot 5 canbe raised or lowered at will and held in place by a bolt 6. As shown this member 4 has holes 1, 1, extending through each side to support the cables E, E.

Preferably each cable E is made of a spirally wound strip of sheet metal I0 and is held at the end by a screw holder I I which can pass through a hole I and carries at the end a knurled nut l2 by which it can be tightened or loosened.

The principal feature of my device is a magnifying glass Mfwhich as shown is of substantially rectangular shape and is carried in a frame 20. ,This, frame extends down at the front 2| and back 22 each end and 3| being-pierced as by holes 32, 33, through each of which a cable E passes. This frame 20 is therefore capable of,

being moved from side to side on the cables ,E, E, and, as they are preferably more or less elastic or flexible, it can also be moved or'swung up and back to inspect the warp in front of the reed R.

Preferably this frame 20 also carries a storage battery 24 connected to an electric bulb 25 by conductors which pass through a switch with a slidable projection 28 by which it can be opened and closed.

F is a cover which as shown is bent down at l3 over one of the stands so as to become part of the loom frame and at M and [5 extends down on'each side in such positions that when the frame 20 with the magnifying glass is moved in underneath it, the projecting arm 28 of the switch engages a fixed rubber projection 21 on cover F, thus opening the circuit between the bulb 25 and the battery 24 and keeping the circuit openiuntil the whole frame is moved out again whereupon projection 21 moves switch arm" 28 and "closes the circuit thus lighting the bulb 25;

By means of the bolt t in the slot 5 in slidable member 4, the cables and glass can beraised or lowered "until the glass has the desired focus for convenient reading;- It retains-the focus as it is'moved from side to side of the loom but if necessary, on account of the elastioityof the cables E, E, the focus can be changed more or less. There is preferably a reflector 26 which directs the light onthe cloth C at thefocus for the glass M as shown in Fig.4. 4

As shown in Fig. 6 instead of a cable support such as A which is fixed in place, by screws 2, 2, I can use a cable support G which includes a stand 40 in each edge of which are a plurality of open slots 4|, 4|, into which rigid rods 42, 42 with heads 43 can be slipped. I 7

As shown there are jaws 4t, 45 projecting in such a way as to embrace some part of the loom frame and to be clamped in position as by a set screw 46. This construction is notas elastic but can be put in place and removed very readily.

As shown in Fig. 7, I can support a frame such .rii, n

as K carrying a round magnifying glass 50 at the end of a lazy tongs 5| which is carried by a stand 52 fastened in anysuitable way to one of the side frame members D.

As shown in Fig. 8, I can use such a frame K with a glass 50 supported by a telescoping arm including the members 53, 54, 55 carried by a stand 56, also attached to any one of the side members such as D.

As shown in Fig. 9, I can use a glass lens L, preferably rectangular, slidable in channel iron shaped tracks and BI supported by stands such as 62.

, I claim:

1. For use on a loom including a stationary frame with side frame members and a breast beam between them, together with a reed; the combination of two supports one attachable to the frame on each side proximate the breast beam and the reed, each including a vertically adjustable member to support a plurality of cables; a plurality of elastic cables which extend between the adjustable members of the supports; a frame slidable on the cables and including a magnifying glass, an electric battery, an electric light in circuit with the battery, a reflector and a switch so positionedthat when the switch engages a member fixed to the loom frame, the

circuit is opened; and a protecting cover for, the,

frame carried by one of the supports.

2. For use on a loom including a stationary framewith side frame members and a breast beam between them together with a reed; the combination of two supports one attachable to the frame on each side proximate the breast beam and the reed, each including a vertically adjustable member to support a plurality of cables; a plurality of elastic cables which extend between the adjustable' members of the supports;

and a frame slidable on the cables and including a magnifying glass, an electric battery, an electric light in circuit with the battery, a reflector anda switch so positioned that when the switch engages a member fixed to the loom frame, the circuit is opened. v

3.;For use on a loomincluding a stationary frame with side frame members and a breast beam between them, together with a reed; the combination of two supports one attachable to the frame on each sideproximate the breast beam and the reed each including a vertically adjustable member to support a plurality of cables; a plurality of elastic cables which extend between the adjustable members of the supports;

- and a frame slidable on the cables and including a magnifying glass, an eleotric'battery, an electric light in circuit with the battery and a reflector.

4; For use on a m including a stationary frame with side frame members and a breast beam between them, together with a reed; the combination of two supports one attachable to the frame on each side proximate the breast beam .andthereed,- each including vertically adjustable members to support a plurality of cables;

a plurality of elastic cables which extend between the adjustable members of the supports; and a frame slidable onthe cables and including a magnifying glass.

. 1 7 JAMES H. MOORE. 

